58208-mt----membrane Technology

NR

Code No: 58208/MT

M.Tech. – II Semester Regular Examinations, September, 2008 MEMBRANE TECHNOLOGY (Chemical Engineering) Time: 3hours

Max. Marks:60 Answer any FIVE questions All questions carry equal marks ---

1.

What are the various conventional separation processes? Discuss in detail, the merits of membrane separation methods compared to the conventional ones.

2.

What are the structural properties of membranes? How these properties influence the separation processes? Give the diagrams for different membrane structures.

3.

Explain in detail, any one method of preparation of synthetic membranes. What are composite membranes? Explain.

4.

How membranes are characterized? Describe in detail, the characterization of ionic membranes. With examples.

5.

Discuss the theory of ‘solute transport’. How the transport mechanism will affect the process? Give brief applications of the ‘dialysis’ process.

6.

What are the various membrane processes? Explain the principle and the details of pressure driven membrane processes. Give two important applications of these processes.

7.

How the problems of concentration polarization are dealt in the RO Process? Explain in detail.

8.

Write short notes on a) Tubular Module c) Symmetric Membranes.

b) Turbulence promoters

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